Description
The Trane SWT3221 Pressure Switch is a genuine OEM HVAC control component engineered to detect and respond to specific pressure changes in residential and commercial HVAC systems. This high-quality Single-Pole, Single-Throw (SPST) pressure switch accurately monitors pressure and opens or closes electrical circuits to protect system operation and improve energy efficiency.
Key Features
- Type: SPST pressure switch — simple, reliable on/off control.
- Pressure Set Points: Opens at approximately -1.36″ W.C. and closes at -1.55″ W.C. for precise pressure regulation.
- Connection: Standard ¼″ barbed connection for easy integration with HVAC tubing.
- Application: Ideal for managing airflow/pressure signals in furnaces, air handlers, or packaged units.
- Construction: Durable housing designed for dependable operation in typical HVAC environments.






